Display device

ABSTRACT

Disclosed is a display device. The display device of the present disclosure includes: a display panel; a rear frame which is positioned in a rearward direction of the display panel; an inner frame which is positioned between the display panel and the rear frame, and coupled to the rear frame; and an outer frame which is coupled to the inner frame, and supports a rear surface of the display panel.

CROSS-REFERENCE TO RELATED APPLICATION

Pursuant to 35 U.S.C. § 119(a), this application claims the benefit ofearlier filing date and right of priority to Korean Patent ApplicationNo. 10-2021-0073239, filed on Jun. 7, 2021, the contents of which arehereby incorporated by reference herein in its entirety.

BACKGROUND OF THE INVENTION 1. Field of the Invention

The present disclosure relates to a display device.

2. Description of the Related Art

As the information society develops, the demand for display devices isalso increasing in various forms. In response to this, various displaydevices such as Liquid Crystal Display Device (LCD), Organic LightEmitting Diode (OLED), and Micro LED have been researched and used inrecent years.

Among them, the liquid crystal panel of the LCD includes a liquidcrystal layer, and a TFT substrate and a color filter substrate facingeach other with the liquid crystal layer interposed therebetween, andmay display an image by using light provided from a backlight unit.

Recently, as interest in the image quality of display device increases,color expression or color reproducibility close to true color isreceiving particular attention, and a lot of research has been performedon image quality improvement to improve light uniformity and to realizenatural colors.

SUMMARY OF THE INVENTION

An object of the present disclosure is to solve the above and otherproblems. Another object of the present disclosure is to provide adisplay device capable of improving image quality.

Another object of the present disclosure is to provide a display devicecapable of improving luminance and light uniformity of a backlight unit.

Another object of the present disclosure is to provide a display devicecapable of effectively controlling light provided from a backlight unit.

Another object of the present disclosure is to improve the purity ofwhite light by improving the bluish phenomenon of light provided from abacklight unit.

Another object of the present disclosure is to provide a couplingstructure of a display device capable of improving luminance and lightuniformity.

Another object of the present disclosure is to provide a display devicehaving a sturdy coupling structure while reducing an optical depth.

In accordance with an aspect of the present disclosure, a display deviceincludes: a display panel; a rear frame which is positioned in arearward direction of the display panel; an inner frame which ispositioned between the display panel and the rear frame, and coupled tothe rear frame; and an outer frame which is coupled to the inner frame,and supports a rear surface of the display panel.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and other objects, features and advantages of the presentdisclosure will be more apparent from the following detailed descriptionin conjunction with the accompanying drawings, in which:

FIGS. 1 to 3 are diagrams illustrating examples of a display deviceaccording to embodiments of the present disclosure;

FIGS. 4 to 6 are diagrams illustrating examples of a substrate and aoptical assembly for providing light to a display device according toembodiments of the present disclosure;

FIGS. 7 to 16 are diagrams illustrating examples of a reflective sheetaccording to embodiments of the present disclosure; and

FIGS. 17 to 30 are diagrams illustrating examples of a couplingstructure of a display device according to embodiments of the presentdisclosure.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Hereinafter, the embodiments disclosed in the present specification willbe described in detail with reference to the accompanying drawings, andthe same or similar elements are denoted by the same reference numeralseven though they are depicted in different drawings and redundantdescriptions thereof will be omitted.

In the following description, with respect to constituent elements usedin the following description, the suffixes “module” and “unit” are usedor combined with each other only in consideration of ease in thepreparation of the specification, and do not have or serve as differentmeanings.

In addition, in describing the embodiments disclosed in the presentspecification, if it is determined that detailed descriptions of relatedknown technologies may obscure the gist of the embodiments disclosed inthe present specification, the detailed description thereof will beomitted.

In addition, the accompanying drawings are provided only for a betterunderstanding of the embodiments disclosed in the present specificationand are not intended to limit the technical ideas disclosed in thepresent specification. Therefore, it should be understood that theaccompanying drawings include all modifications, equivalents andsubstitutions included in the scope and sprit of the present disclosure.

Hereinafter, a liquid crystal display device (LCD) will be described asan example for a display panel, but the display panel applicable to thepresent disclosure is not limited to the liquid crystal display device.

Referring to FIG. 1 , a display device may include a first long sideLS1, a second long side LS2 opposite to the first long side LS1, a firstshort side SS1 adjacent to the first long side LS1 and the second longside LS2, and a second short side SS2 opposite to the first short sideSS1.

The area adjacent to the first short side SS1 may be referred to as afirst side area, the area adjacent to the second short side SS2 may bereferred to as a second side area opposite to the first side area, thearea adjacent to the first long side LS1 may be referred to as a thirdside area which is adjacent to the first side area and the second sidearea, and positioned between the first side area and the second sidearea, and the area adjacent to the second long side LS2 may be referredto as a fourth side area which is adjacent to the first side area andthe second side area, positioned between the first side area and thesecond side area, and opposite to the third side area.

It is illustrated and described that the lengths of the first and secondlong sides LS1 and LS2 are longer than the lengths of the first andsecond short sides SS1 and SS2. However, it may be possible that thelengths of the first and second long sides LS1 and LS2 are approximatelyequal to the lengths of the first and second short sides SS1 and SS2.

A first direction DR1 may be a direction parallel to the long side LS1,LS2 of a display panel 100, and a second direction DR2 may be adirection parallel to the short side SS1, SS2 of the display panel 100.A third direction DR3 may be a direction perpendicular to the firstdirection DR1 and/or the second direction DR2.

The first direction DR1 and the second direction DR2 may each bereferred to as a horizontal direction. In addition, the third directionDR3 may be referred to as a vertical direction.

A side on which the display device displays an image may be referred toas a forward direction or a front side or front surface. When thedisplay device displays an image, the side from which the image cannotbe observed may be referred to as a rearward direction, or a rear sideor rear surface.

When the display is viewed from the forward direction or the front side,the side of the first long side LS1 may be referred to as an upper sideor an upper surface. Similarly, the side of the second long side LS2 maybe referred to as a lower side or a lower surface. Similarly, the sideof the first short side SS1 may be referred to as a right side or aright surface, and the side of the second short side SS2 may be referredto as a left side or a left surface.

The first long side LS1, the second long side LS2, the first short sideSS1, and the second short side SS2 may each be referred to as an edge ofthe display device. In addition, a point where the first long side LS1,the second long side LS2, the first short side SS1, and the second shortside SS2 meet each other may be referred to as a corner. For example, apoint where the first long side LS1 and the first short side SS1 meetmay be a first corner C1, a point where the first long side LS1 and thesecond short side SS2 meet may be a second corner C2, a point where thesecond short side SS2 and the second long side LS2 meet may be a thirdcorner C3, and a point where the second long side LS2 and the firstshort side SS1 meet may be a fourth corner C4.

A direction from the first short side SS1 to the second short side SS2or a direction from the second short side SS2 to the first short sideSS1 may be referred to as a left-right direction LR. A direction fromthe first long side LS1 to the second long side LS2 or a direction fromthe second long side LS2 to the first long side LS1 may be referred toas an up-down direction UD.

Referring to FIG. 2 , a front cover 105 may cover at least partial areaof the front and side surfaces of a display panel 110. The front cover105 may be divided into a front cover positioned in the front surface ofthe display panel 110 and a side cover positioned in the side surface ofthe display panel 110. Either one of the front cover and the side covermay be omitted.

The display panel 110 is provided on the front surface of the displaydevice 100 and may display an image. The display panel 110 may displayan image in such a manner that a plurality of pixels output red, green,or blue (RGB) for each pixel according to the timing. The display panel110 may be divided into an active area on which an image is displayedand a de-active area on which an image is not displayed. The displaypanel 110 may include a front substrate and a rear substrate facing eachother with a liquid crystal layer interposed therebetween.

The front substrate may include a plurality of pixels including red (R),green (G), and blue (B) sub-pixels. The front substrate may output lightcorresponding to a color of red, green, or blue according to a controlsignal.

The rear substrate may include switching elements. The rear substratemay switch a pixel electrode. For example, the pixel electrode maychange the molecular arrangement of the liquid crystal layer accordingto a control signal applied from an external. The liquid crystal layermay include liquid crystal molecules. The liquid crystal molecules maychange their arrangement in response to a voltage difference generatedbetween the pixel electrode and a common electrode. The liquid crystallayer may transmit or block light provided from a backlight unit 120 tothe front substrate.

The backlight unit 120 may be positioned toward the rear of the displaypanel 110. The backlight unit 120 may include light sources. Thebacklight unit 120 may be coupled to a frame 130 toward a front of theframe 130. The frame 130 may be referred to as a rear frame 130 or amain frame 130.

The backlight unit 120 may be driven by a full driving method or apartial driving method such as local dimming or impulsive. The backlightunit 120 may include an optical sheet 125 and an optical layer 123. Theoptical layer 123 may be referred to as an optical module 123 or anoptical unit 123.

The optical sheet 125 may allow the light of the light source to beevenly transmitted to the display panel 110. The optical sheet 125 mayinclude a plurality of layers. For example, the optical sheet 125 mayinclude a prism sheet, a diffusion sheet, or the like.

The optical sheet 125 may include a coupling portion 125 d. The couplingportion 125 d may be coupled to the front cover 105, the frame 130,and/or a back cover 150. Alternatively, the coupling portion 125 d maybe fastened to a structure formed or coupled on the front cover 105, theframe 130, and/or the back cover 150.

The frame 130 may serve to support components of the display device 100.For example, a configuration such as the backlight unit 120 may becoupled to the frame 130. The frame 130 may be made of a metal materialsuch as an aluminum alloy.

The back cover 150 may be positioned at the rear side or toward therearward direction of the display device 100. The back cover 150 may becoupled to the frame 130 and/or the front cover 105. For example, theback cover 150 may be an injection made of a resin material.

Referring to FIG. 3 , the substrate 122 may be configured in the form ofa plurality of straps which extend in a first direction and are spacedapart from each other by a certain distance in a second directionorthogonal to the first direction.

At least one optical assembly 124 may be mounted on the substrate 122.An electrode pattern for connecting an adapter and the optical assembly124 may be formed on the substrate 122. For example, a carbon nanotubeelectrode pattern for connecting the optical assembly 124 and theadapter may be formed on the substrate 122.

The substrate 122 may be formed of at least one of polyethyleneterephthalate (PET), glass, polycarbonate (PC), and silicon. Thesubstrate 122 may be a printed circuit board (PCB) on which at least oneoptical assembly 124 is mounted.

The optical assembly 124 may be disposed on the substrate 122 with acertain interval in the first direction. A diameter of the opticalassembly 124 may be greater than a width of the substrate 122. In otherwords, the diameter may be greater than the thickness of the substrate122 in the second direction.

The optical assembly 124 may be a light emitting diode (LED) chip or alight emitting diode package including at least one light emitting diodechip.

The optical assembly 124 may include a light source. The light sourcemay be a colored LED or a white LED that emits at least one color amongcolors such as red, blue, green, and the like. The colored LED may be ablue LED. For example, the light source may be a mini LED.

A reflective sheet 126 may be positioned at the front side of thesubstrate 122. The reflective sheet 126 may be positioned on an area ofthe substrate 122 excluding the area where the optical assembly 124 isformed. The reflective sheet 126 may have a plurality of holes 235.

The reflective sheet 126 may reflect the light emitted from the opticalassembly 124 toward the front side. In addition, the reflective sheet126 may re-reflect light emitted from the optical assembly 124.

The reflective sheet 126 may include at least one of metal and metaloxide which are reflective materials. For example, the reflective sheet126 may include a metal having a high reflectance such as at least oneof aluminum (Al), silver (Ag), gold (Au), and titanium dioxide (TiO2)and/or a metal oxide.

A resin may be deposited or coated on the optical assembly 124 and/orthe reflective sheet 126. The resin may serve to diffuse light emittedfrom the optical assembly 124.

An optical layer 129 may include a phosphor. The optical layer 129 maybe formed of a plate or a thin sheet. The optical layer 129 may includea red-based phosphor and/or a green-based phosphor. The optical layer129 may change a wavelength or color of light provided from the opticalassembly 124. For example, when the optical assembly 124 providesblue-based light, the optical layer 129 may convert the blue-based lightto white light. The optical layer 129 may be referred to as a QD layeror a QD sheet.

The optical sheet 125 may be positioned in the forward direction of theoptical layer 129. The rear surface of the optical sheet 125 may be inclose contact with the optical layer 129, and the front surface of theoptical sheet 125 may be in close contact with or adjacent to the rearsurface of the display panel 110.

The optical sheet 125 may include at least one sheet. In some cases, theoptical sheet 125 may include one or more prism sheets and/or one ormore diffusion sheets. The plurality of sheets included in the opticalsheet 125 may be in an adhesive state and/or a close contact state.

The optical sheet 125 may be configured of a plurality of sheets havingdifferent functions. For example, the optical sheet 125 may includefirst to third optical sheets 125 a to 125 c. For example, the firstoptical sheet 125 a may be a diffusion sheet, and the second and thirdoptical sheets 125 b and 125 c may be a prism sheet. The number and/orpositions of the diffusion sheet 125 a and the prism sheets 125 b and125 c may be changed.

The diffusion sheet 125 a may prevent the light emitted from the opticallayer 129 from being partially concentrated, thereby making lightdistribution more uniform. The prism sheets 125 b and 125 c may collectlight emitted from the diffusion sheet 125 a to provide light to thedisplay panel 110.

The coupling portion 125 d may be formed in at least one of sides oredges of the optical sheet 125. The coupling portion 125 d may be formedin at least one of the first to third optical sheets 125 a to 125 c.

The coupling portion 125 d may be formed in the long side of the opticalsheet 125. The coupling portion 125 d formed in the first long side andthe coupling portion 125 d formed in the second long side may beasymmetric. For example, the positions and/or the number of the couplingportion 125 d in the first long side and the coupling portion 125 d inthe second long side may be different from each other.

Referring to FIGS. 4 and 5 , a substrate 222 may be a plate. The frontsurface of the substrate 222 may be white. A white or reflectivematerial may be applied to the front surface of the substrate 222. Theoptical assembly 224 may be mounted on the substrate 222. The opticalassembly 224 may include a light source and a mini-lens. For example,the light source may be a mini LED that provides blue-based light. Aplurality of light sources may be mounted on the substrate 222. Theplurality of light sources may be disposed to form a plurality of rowsand a plurality of columns.

An integrated device 2223 and a capacitor 2224 may be disposed aroundthe light source 224. For example, the integrated device 2223 may be anIC chip 2223. The plurality of capacitors 2224 may face the integrateddevice 2223. The integrated device 2223 may control power provided to acertain number of the plurality of light sources 224.

A supporter 2221 may be mounted on the substrate 222. The supporter 2221may maintain a constant distance between the substrate 222 and theaforementioned optical layer 129. The supporter 2221 may have a conicalshape as a whole. The supporter 2221 may be formed by double injectionand may be bonded to the substrate 222. The supporter 2221 may bepositioned between the optical assemblies 224, and may be fixed on thesubstrate 222.

Referring to FIG. 6 , there may be a plurality of substrates 222. Theplurality of substrates 222 may include a first substrate 222 a, asecond substrate 222 b, a third substrate 222 c, a fourth substrate 222d, a fifth substrate 222 e, a sixth substrate 222 f, a seventh substrate222 g, an eighth substrate 222 h, a ninth substrate 222 i, and a tenthsubstrate 222 j.

The first substrate 222 a may be positioned in contact with the firstlong side LS1 and the first short side SS1, and may form a first cornerC1. The second substrate 222 b may be positioned in contact with thefirst short side SS1 and the second long side LS2, and may form a fourthcorner C4. The second substrate 222 b may be adjacent to the firstsubstrate 222 a in the up-down direction.

The ninth substrate 222 i may be positioned in contact with the firstlong side LS1 and the second short side SS2, and may form a secondcorner C2. The tenth substrate 222 j may be positioned in contact withthe second short side SS2 and the second long side LS2, and may form athird corner C3. The tenth substrate 222 j may be adjacent to the ninthsubstrate 222 i in the up-down direction.

The fifth substrate 222 e may be in contact with the first long side LS1and may be positioned between the first substrate 222 a and the ninthsubstrate 222 i. The sixth substrate 222 f may be in contact with thesecond long side LS2 and may be positioned between the second substrate222 d and the tenth substrate 222 j. The sixth substrate 222 f may beadjacent to the fifth substrate 222 e in the up-down direction.

The third substrate 222 c may be in contact with the first long side LS1and may be positioned between the first substrate 222 a and the fifthsubstrate 222 e. The fourth substrate 222 d may be in contact with thesecond long side LS2 and may be positioned between the second substrate222 b and the sixth substrate 222 f. The fourth substrate 222 d may beadjacent to the third substrate 222 c in the up-down direction.

The seventh substrate 222 g may be in contact with the first long sideLS1 and may be positioned between the fifth substrate 222 e and theninth substrate 222 i. The eighth substrate 222 h may be in contact withthe second long side LS2 and may be positioned between the sixthsubstrate 222 f and the tenth substrate 222 j. The eighth substrate 222h may be adjacent to the seventh substrate 222 g in the up-downdirection.

The reflective sheet 226 may cover the substrate 222. There may be aplurality of reflective sheets 226. The plurality of reflective sheets226 may cover the plurality of substrates 222. The plurality ofreflective sheets 226 may include a first reflective sheet 226 a, asecond reflective sheet 226 b, a third reflective sheet 226 c, a fourthreflective sheet 226 d, a fifth reflective sheet 226 e, and a sixthreflective sheet 226 f.

The first reflective sheet 226 a may cover the first substrate 222 a.The first reflective sheet 226 a may overlap the second substrate 222 b,the third substrate 222 c, and the fourth substrate 222 d. The secondreflective sheet 226 b may cover at least a part or most of the secondsubstrate 222 b, and may overlap the fourth substrate 222 d.

The third reflective sheet 226 c may cover at least a part or most ofthe fifth substrate 222 e. The third reflective sheet 226 c may overlapthe third substrate 222 c, the fourth substrate 222 d, the sixthsubstrate 222 f, and the seventh substrate 222 g. The fourth reflectivesheet 226 d may cover at least a part or most of the sixth substrate 222f. The fourth reflective sheet 226 d may overlap the fourth substrate222 d, the fifth substrate 222 e, the sixth substrate 222 f, and theseventh substrate 222 g.

The fifth reflective sheet 226 e may cover at least a part or most ofthe ninth substrate 222 i, and may overlap the seventh substrate 222 g.The sixth reflective sheet 226 f may cover the tenth substrate 222 j.The sixth reflective sheet 226 f may overlap the seventh substrate 222g, the eighth substrate 222 h, and the ninth substrate 222 i.

An area DA or a dot area DA or a pattern area DA may be formed along thefirst long side LS1, the second long side LS2, the first short side SS1,and/or the second short side SS2.

Referring to FIGS. 7 and 8 , the reflective sheet 226 may include afirst side S1, a second side S2, a third side S3, and a fourth side S4.A side S may be referred to as an edge S.

The reflective sheet 226 may include a plurality of holes (h) and aplurality of cut-lines (CL). The plurality of holes h may be formed tocorrespond to the light sources 224 or the optical assemblies 224. Anarea of the hole h may be greater than an area of the optical assembly224.

The reflective sheet 226 may have an accommodation hole H. A cut-lineCL3 may be formed around the accommodation hole H. The cut line CL3 maybe formed in the radial direction of the accommodation hole H. Forexample, the cut line CL3 may have a + or cross shape. The accommodationhole H may be referred to as a cut-line hole H. The integrated device2223 may be positioned in the accommodation hole H. The area of theaccommodation hole H may be larger than the area of the integrateddevice 2223. For example, the accommodation hole H may have a circularshape, and the integrated device 2223 may have a rectangular shape. Aportion of the integrated device 2223 may slightly overlap or overhangthe accommodation hole H, and thus the cut line CL3 around theaccommodation hole H may be forced open to accommodate.

The reflective sheet 226 may include a cut line CL. For example, the cutline CL may have a + or cross shape. The cut line CL1, CL2 may bepositioned between the holes h, and may be positioned adjacent to theaccommodation hole H. A first cut line CL1 may be positioned between theholes h, and may be positioned adjacent to the accommodation hole H. Asecond cut line CL2 may be positioned opposite the first cut line CL1with respect to the accommodation hole H. The accommodation hole H maybe positioned between the first cut line CL1 and the second cut lineCL2. The capacitors 2224 (see FIG. 5 ) adjacent to the integrated device2223 may be positioned to correspond to the cut lines CL1 and CL2, andthe cut lines CL1 and CL2 may be opened to accommodate.

Accordingly, it is possible to prevent the reflective sheet 226 frombeing spaced apart from the substrate 222, and to improve lightuniformity.

Referring to FIG. 9 , the reflective sheet 226 may include a first areaDA1 and a second area DA2. The first area DA1 may be referred to as afirst dot area DA1 or a first pattern area DA1, and the second area DA2may be referred to as a second dot area DA2 or a second pattern areaDA2.

The first area DA1 may be formed to be elongated along the first side S1and/or the fourth side S4. The first plurality of holes h may besequentially formed in the first area DA1 while maintaining a constantinterval. The first area DA1 may be in contact with the first side Siand/or the fourth side S4. The description of the first side S1 and/orthe fourth side S4 may be applied to other sides S2 and S3.

The second area DA2 may be formed to be elongated along the first sideS1 and/or the fourth side S4. The second plurality of holes h may besequentially formed in the second area DA2 while maintaining a constantinterval. The second area DA2 may be in contact with or adjacent to thefirst area DA1. The distance of the second area DA2 from the first sideS1 and/or the second side S2 is greater than the distance of the firstarea DA1 from the first side S1 and/or the fourth side S4. The firstarea DA1 may be positioned between the second area DA2 and the firstside S1 and/or the fourth side S4.

The light pattern LP, CLP may include a phosphor. The light pattern LP,CLP may include a red-based phosphor and a green-based phosphor. Thelight pattern LP, CLP may include a yellow-based phosphor.

For example, the light pattern LP, CLP may have a yellow-based color,with the naked eye. The light pattern LP, CLP may convert blue-basedlight provided by the light source 224 (refer to FIG. 5 ) or the opticalassembly 224 into white light.

For another example, the light pattern LP, CLP may have black orgray-based color, with the naked eye. The light pattern LP, CLP mayabsorb light provided by the light source 224 (refer to FIG. 5 ) or theoptical assembly 224.

The light pattern LP, CLP may be formed in the first area DAL The lightpattern LP, CLP may be formed between the plurality of first holes h andthe first side S1 and/or the fourth side S4. The light pattern LP, CLPmay include a plurality of segments LP and CLP. The plurality ofsegments LP may be an elongated line. Each of the plurality of lines LPmay be positioned to correspond to each of the plurality of holes h. Forexample, the length of the line LP may correspond to the diameter of thehole h. As another example, the length of the line LP may be smallerthan the diameter of the hole h. As another example, the length of theline LP may be greater than the diameter of the hole h.

The corner line CLP may extend while being bent or curved or may have afan shape or semicircular shape. For example, the corner line CLP may bea quarter circle. The corner line CLP may be positioned between the holeh closest to the second corner C2 and the second corner C2. Thedescription of the second corner C2 may be applied to other corners C1,C3, C4.

Referring to FIG. 10 , the reflective sheet 226 may include a first areaDA1 and a second area DA2. The first area DA1 may be referred to as afirst dot area DA1 or a first pattern area DA1, and the second area DA2may be referred to as a second dot area DA2 or a second pattern areaDA2.

The first area DA1 may be formed to be elongated along the first side S1and/or the fourth side S4. A first plurality of holes h may besequentially formed in the first area DA1 while maintaining a constantinterval. The first area DA1 may be in contact with the first side S1and/or the fourth side S4. The description of the first side S1 and/orthe fourth side S4 may be applied to other sides S2 and S3.

The second area DA2 may be formed to be elongated along the first sideSi and/or the fourth side S4. A second plurality of holes h may besequentially formed in the second area DA2 while maintaining a constantinterval. The second area DA2 may be in contact with or adjacent to thefirst area DA1. The distance of the second area DA2 from the first sideS1 and/or the fourth side S4 may be greater than the distance of thefirst area DA1 from the first side S1 and/or the fourth side S4. Thefirst area DA1 may be positioned between the second area DA2 and thefirst side S1 and/or the fourth side S4.

The light pattern LP, CLP, DLP may include a phosphor. The light patternLP, CLP, DLP may include a red-based phosphor and a green-basedphosphor. The light pattern LP, CLP, DLP may include a yellow-basedphosphor.

For example, with the naked eye, the light pattern LP, CLP, DLP may havea yellow-based color. The light pattern LP, CLP, DLP may convertblue-based light provided by the light source 224 (refer to FIG. 5 ) orthe optical assembly 224 to white light.

For another example, the light pattern LP, CLP, DLP may have black orgray-based color, with the naked eye. The light pattern LP, CLP, DLP mayabsorb light provided by the light source 224 (refer to FIG. 5 ) or theoptical assembly 224.

The light pattern LP, CLP, DLP may be formed in the first area DA1. Thelight pattern LP, CLP may be formed between the first plurality of holesh and the first side S1 and/or the fourth side S4.

The light pattern LP may include a plurality of segments LP. Theplurality of segments LP may be an elongated line. Each of the pluralityof lines LP may be positioned to correspond to each of the plurality ofholes h. For example, the length of the line LP may correspond to thediameter of the hole h. As another example, the length of the line LPmay be smaller than the diameter of the hole h. As another example, thelength of the line LP may be greater than the diameter of the hole h.

The light pattern DLP may include dots DLP. The dots DLP may be disposedaround the hole h. For example, the number of dots DLP may be three, orany other variation of numbers. The line LP and the dot DLP may bedisposed to surround the hole h. Two dots DLP may be positioned oppositeeach other with respect to the hole h, and one dot DLP may be positionedopposite the line LP with respect to the hole h.

The light pattern CLP may include a corner line CLP. The corner line CLPmay extend while being bent or curved or may have a fan shape orsemicircular shape. For example, the corner line CLP may be a quartercircle. The corner line CLP may be positioned between the hole h closestto the second corner C2 and the second corner C2. The corner line CLPmay be referred to as a curved line CLP. The dots DLP may be disposedaround the hole h closest to the second corner C2. For example, thenumber of dots DLP may be five, or any other variation of numbers. Thefive dots DLP may be sequentially disposed around the hole h closest tothe second corner C2 together with the corner line CLP. The dots DLP maybe opposite to the corner line CLP with respect to the hole h. Thedescription of the second corner C2 may be applied to other corners C1,C3, and C4.

Referring to FIG. 11 , the reflective sheet 226 may include a first areaDA1, a second area DA2, a third area DA3, a fourth area DA4, and acentral area CDA. The area DA may be referred to as a dot area DA.

The first area DA1 may be formed to be elongated along the first side Siand/or the fourth side S4. The first plurality of holes h may besequentially formed in the first area DA1 while maintaining a constantinterval. The first area DA1 may be in contact with the first side S1and/or the fourth side S4. The description of the first side S1 and/orthe fourth side S4 may be applied to other sides S2 and S3.

The second area DA2 may be formed to be elongated along the first sideS1 and/or the fourth side S4. The second plurality of holes h may besequentially formed in the second area DA2 while maintaining a constantinterval. The second area DA2 may be in contact with or adjacent to thefirst area DA1. The distance of the second area DA2 from the first sideS1 and/or the fourth side S4 may be greater than the distance of thefirst area DA1 from the first side S1 and/or the fourth side S4. Thefirst area DA1 may be positioned between the second area DA2 and thefirst side S1 and/or the fourth side S4.

The third area DA3 may be formed to be elongated along the first side S1and/or the fourth side S4. A third plurality of holes h may besequentially formed in the third area DA3 while maintaining a constantinterval. The third area DA3 may be in contact with or adjacent to thesecond area DA2. The distance of the third area DA3 from the first sideS1 and/or the fourth side S4 may be greater than the distance of thesecond area DA2 from the first side S1 and/or the fourth side S4. Thesecond area DA2 may be positioned between the third area DA3 and thefirst area DA1.

The fourth area DA4 may be formed to be elongated along the first sideS1. A fourth plurality of holes h may be sequentially formed in thefourth area DA4 while maintaining a constant interval. The fourth areaDA4 may be in contact with or adjacent to the third area DA3. Thedistance of the fourth area DA4 from the first side S1 and/or the fourthside S4 may be greater than the distance of the third area DA3 from thefirst side S1 and/or the fourth side S4. The third area DA3 may bepositioned between the fourth area DA4 and the second area DA2.

The central area CDA may be an area of the reflective sheet 226excluding the first area DA1, the second area DA2, the third area DA3,and the fourth area DA4.

The light pattern DLP may include a phosphor. The light pattern DLP mayinclude a red-based phosphor and a green-based phosphor. The lightpattern DLP may include a yellow-based phosphor.

For example, the light pattern DLP may have a yellow-based color, withthe naked eye. The light pattern DLP may convert blue-based lightprovided by the light source 224 (refer to FIG. 5 ) or the opticalassembly 224 into white light.

As another example, the light pattern DLP may have black or gray-basedcolor, with the naked eye. The light pattern DLP may absorb lightprovided by the light source 224 (refer to FIG. 5 ) or the opticalassembly 224.

The light pattern DLP may include dots DLP. The dots DLP may be disposedaround the hole h. The dots DLP may be disposed to surround the hole h.

First dots DLP1 may be disposed around at least one of the firstplurality of holes h. For example, the number of the first dots DLP1 maybe eight, or any other variation of numbers, and the eight first dotsDLP1 may be sequentially positioned around the hole h while maintaininga constant interval.

Second dots DLP2 may be disposed around at least one of the secondplurality of holes h. For example, the number of second dots DLP2 may beeight, and the eight second dots DLP2 may be sequentially positionedaround the hole h while maintaining a constant interval.

Third dots DLP3 may be disposed around at least one of the plurality ofthird holes h. For example, the number of third dots DLP3 may be eight,or any other variation of numbers, and the eight third dots DLP3 may besequentially positioned around the hole h while maintaining a constantinterval.

Fourth dots DLP4 may be disposed around at least one of the plurality offourth holes h. For example, the number of fourth dots DLP4 may be threeor four, or any other variation of numbers, and four fourth dots DLP4may be sequentially positioned around the hole h while maintaining aconstant interval. The number of dots DLP4 around the hole h adjacent tothe cut line CL1 may be three. The dot DLP4 may be excluded from an areaadjacent to the cut line CL1 around the hole h.

The sizes of dots may vary based on location. For example, the size ofthe first dot DLP1 may be greater than the size of the second dot DLP2.The size of the second dot DLP2 may be greater than the size of thethird dot DLP3. The size of the third dot DLP3 may be greater than thesize of the fourth dot DLP4. As another example, the sizes of the firstdot DLP1, the second dot DLP2, the third dot DLP3, and the fourth dotDLP4 may have the same size. When the sizes of the dots DLP are thesame, the number of dots DLP may increase.

The description of the second corner C2 may be applied to other cornersC1, C3, and C4.

Referring to FIG. 12 , the reflective sheet 226 may include a first areaDA1, a second area DA2, a third area DA3, a fourth area DA4, and acentral area CDA. The area DA may be referred to as a dot area DA or apattern area DA.

The first area DA1 may be formed to be elongated along the first side S1and/or the fourth side S4. The first plurality of holes h may besequentially formed in the first area DA1 while maintaining a constantinterval. The first area DA1 may be in contact with the first side S1and/or the fourth side S4. The description of the first side S1 and/orthe fourth side S4 may be applied to other sides S2 and S3.

The second area DA2 may be formed to be elongated along the first sideS1 and/or the fourth side S4. The second plurality of holes h may besequentially formed in the second area DA2 while maintaining a constantinterval. The second area DA2 may be in contact with or adjacent to thefirst area DA1. The distance of the second area DA2 from the first sideS1 and/or the fourth side S4 may be greater than the distance of thefirst area DA1 from the first side S1 and/or the fourth side S4. Thefirst area DA1 may be positioned between the second area DA2 and thefirst side S1 and/or the fourth side S4.

The third area DA3 may be formed to be elongated along the first side S1and/or the fourth side S4. A third plurality of holes h may besequentially formed in the third area DA3 while maintaining a constantinterval. The third area DA3 may be in contact with or adjacent to thesecond area DA2. The distance of the third area DA3 from the first sideS1 and/or the fourth side S4 may be greater than the distance of thesecond area DA2 from the first side S1 and/or the fourth side S4. Thesecond area DA2 may be positioned between the third area DA3 and thefirst area DA1.

The fourth area DA4 may be formed to be elongated along the first sideS1 and/or the fourth side S4. A fourth plurality of holes h may besequentially formed in the fourth area DA4 while maintaining a constantinterval. The fourth area DA4 may be in contact with or adjacent to thethird area DA3. The distance of the fourth area DA4 from the first sideS1 and/or the fourth side S4 may be greater than the distance of thethird area DA3 from the first side S1 and/or the fourth side S4. Thethird area DA3 may be positioned between the fourth area DA4 and thesecond area DA2.

The central area CDA may be an area of the reflective sheet 226excluding the first area DA1, the second area DA2, the third area DA3,and the fourth area DA4.

The light pattern DLP, LP may include a phosphor. The light pattern DLP,LP may include a red-based phosphor and a green-based phosphor. Thelight pattern DLP, LP may include a yellow-based phosphor.

For example, the light pattern DLP, LP may have a yellow-based color,with the naked eye. The light pattern DLP, LP may convert blue-basedlight provided by the light source 224 (refer to FIG. 5 ) or the opticalassembly 224 into white light.

As another example, the light pattern DLP, LP may have black orgray-based color, with the naked eye. The light pattern DLP, LP mayabsorb light provided by the light source 224 (refer to FIG. 5 ) or theoptical assembly 224.

The light pattern DLP may include dots DLP. The dots DLP may be disposedaround the hole h. The dots DLP may be disposed to surround the hole h.

First dots DLP1 may be disposed around at least one of the firstplurality of holes h. For example, the number of the first dots DLP1 maybe eight, or any other variation of numbers and the eight first dotsDLP1 may be sequentially positioned around the hole h while maintaininga constant interval.

Second dots DLP2 may be disposed around at least one of the secondplurality of holes h. For example, the number of second dots DLP2 may beeight, or any other variation of numbers, and the eight second dots DLP2may be sequentially positioned around the hole h while maintaining aconstant interval.

Third dots DLP3 may be disposed around at least one of the plurality ofthird holes h. For example, the number of third dots DLP3 may be eight,or any other variation of numbers, and the eight third dots DLP3 may besequentially positioned around the hole h while maintaining a constantinterval.

Fourth dots DLP4 may be disposed around at least one of the plurality offourth holes h. For example, the number of fourth dots DLP4 may be threeor four, or any other variation of numbers, and four fourth dots DLP4may be sequentially positioned around the hole h while maintaining aconstant interval. The number of dots DLP4 around the hole h adjacent tothe cut line CL1 may be three. The dot DLP4 may be excluded from an areaadjacent to the cut line CL1 around the hole h.

For example, the size of the first dot DLP1 may be greater than the sizeof the second dot DLP2. The size of the second dot DLP2 may be greaterthan the size of the third dot DLP3. The size of the third dot DLP3 maybe greater than the size of the fourth dot DLP4. As another example, thesizes of the first dot DLP1, the second dot DLP2, the third dot DLP3,and the fourth dot DLP4 may have the same size. When the sizes of thedots DLP are the same, the number of dots DLP may increase.

The light pattern LP may include a plurality of segments LP. Theplurality of segments LP may be an elongated line. Each of the pluralityof lines LP may be positioned to correspond to each of the plurality ofholes h. The plurality of lines LP may be positioned between the firstplurality of holes h and the first side S1 and/or the fourth side S4.The plurality of lines LP may be positioned between the first dots DA1and the first side S1 and/or the fourth side S4.

For example, the length of the line LP may correspond to the diameter ofthe hole h. As another example, the length of the line LP may be smallerthan the diameter of the hole h. As another example, the length of theline LP may be greater than the diameter of the hole h.

The description of the second corner C2 may be applied to other cornersC1, C3, and C4.

Referring to FIG. 13 , the reflective sheet 226 may include a first areaDA1, a second area DA2, a third area DA3, a fourth area DA4, and acentral area CDA. The area DA may be referred to as a dot area DA or apattern area DA.

The first area DA1 may be formed to be elongated along the first side S1and/or the fourth side S4. The first plurality of holes h may besequentially formed in the first area DA1 while maintaining a constantinterval. The first area DA1 may be in contact with the first side S1and/or the fourth side S4. The description of the first side S1 and/orthe fourth side S4 may be applied to other sides S2 and S3.

The second area DA2 may be formed to be elongated along the first sideS1 and/or the fourth side S4. The second plurality of holes h may besequentially formed in the second area DA2 while maintaining a constantinterval. The second area DA2 may be in contact with or adjacent to thefirst area DA1. The distance of the second area DA2 from the first sideS1 and/or the fourth side S4 may be greater than the distance of thefirst area DA1 from the first side S1 and/or the fourth side S4. Thefirst area DA1 may be positioned between the second area DA2 and thefirst side S1 and/or the fourth side S4.

The third area DA3 may be formed to be elongated along the first side S1and/or the fourth side S4. A third plurality of holes h may besequentially formed in the third area DA3 while maintaining a constantinterval. The third area DA3 may be in contact with or adjacent to thesecond area DA2. The distance of the third area DA3 from the first sideS1 and/or the fourth side S4 may be greater than the distance of thesecond area DA2 from the first side S1 and/or the fourth side S4. Thesecond area DA2 may be positioned between the third area DA3 and thefirst area DA1.

The fourth area DA4 may be formed to be elongated along the fourth sideS4. A fourth plurality of holes h may be sequentially formed in thefourth area DA4 while maintaining a constant interval. The fourth areaDA4 may be in contact with or adjacent to the third area DA3. Thedistance of the fourth area DA4 from the first side S1 and/or the fourthside S4 may be greater than the distance of the third area DA3 from thefirst side S1 and/or the fourth side S4. The third area DA3 may bepositioned between the fourth area DA4 and the second area DA2.

The central area CDA may be an area of the reflective sheet 226excluding the first area DA1, the second area DA2, the third area DA3,and the fourth area DA4.

The light pattern DLP, CLP may include a phosphor. The light patternDLP, CLP may include a red-based phosphor and a green-based phosphor.The light pattern DLP, CLP may include a yellow-based phosphor.

For example, the light pattern DLP, CLP may have a yellow-based color,with the naked eye. The light pattern DLP, CLP may convert blue-basedlight provided by the light source 224 (refer to FIG. 5 ) or the opticalassembly 224 into white light.

As another example, the light pattern DLP, CLP may have black orgray-based color, with the naked eye. The light pattern DLP, CLP mayabsorb light provided by the light source 224 (refer to FIG. 5 ) or theoptical assembly 224.

The light pattern DLP may include dots DLP. The dots DLP may be disposedaround the hole h. The dots DLP may be disposed to surround the hole h.

The curved line CLP may be disposed around at least one hole h among thefirst plurality of holes h. The curved line CLP may have a ring shape asa whole. The curved line CLP may be elongated along the externalcircumference of the hole h. A portion of the curved line CLP may beopened. The open portion of the curved line CLP may face the first sideS1 or the fourth side S4.

Second dots DLP2 may be disposed around at least one of the secondplurality of holes h. For example, the number of second dots DLP2 may beeight, or any other variation of numbers, and the eight second dots DLP2may be sequentially positioned around the hole h while maintaining aconstant interval.

Third dots DLP3 may be disposed around at least one of the plurality ofthird holes h. For example, the number of third dots DLP3 may be eight,or any other variation of numbers, and the eight third dots DLP3 may besequentially positioned around the hole h while maintaining a constantinterval.

Fourth dots DLP4 may be disposed around at least one of the plurality offourth holes h. For example, the number of fourth dots DLP4 may be threeor four, or any other variation of numbers, and four fourth dots DLP4may be sequentially positioned around the hole h while maintaining aconstant interval. The number of dots DLP4 around the hole h adjacent tothe cut line CL1, CL2, CL3 may be three. The dot DLP4 may be excludedfrom an area adjacent to the cut line CL1, CL2, CL3 around the hole h.

For example, the size of the second dot DLP2 may be greater than thesize of the third dot DLP3. The size of the third dot DLP3 may begreater than the size of the fourth dot DLP4. As another example, thesizes of the second dot DLP2, the third dot DLP3, and the fourth dotDLP4 may have the same size. When the sizes of the dots DLP are thesame, the number of dots DLP may increase.

The description of the second corner C2 may be applied to other cornersC1, C3, and C4.

Referring to FIG. 14 , the reflective sheet 226 may include a first areaDA1, a second area DA2, a third area DA3, and a fourth area DA4. Thearea DA may be referred to as a dot area DA or a pattern area DA.

The first area DA1 may be formed to be elongated along the first side S1and/or the fourth side S4. The first plurality of holes h may besequentially formed in the first area DA1 while maintaining a constantinterval. The first area DA1 may be in contact with the first side S1and/or the fourth side S4. The description of the first side S1 and/orthe fourth side S4 may be applied to other sides S2 and S3 (refer toFIG. 7 ).

The second area DA2 may be formed to be elongated along the first sideS1 and/or the fourth side S4. The second plurality of holes h may besequentially formed in the second area DA2 while maintaining a constantinterval. The second area DA2 may be in contact with or adjacent to thefirst area DA1. The distance of the second area DA2 from the first sideS1 and/or the fourth side S4 may be greater than the distance of thefirst area DA1 from the first side S1 and/or the fourth side S4. Thefirst area DA1 may be positioned between the second area DA2 and thefirst side S1 and/or the fourth side S4.

The third area DA3 may be formed to be elongated along the first side S1and/or the fourth side S4. A third plurality of holes h may besequentially formed in the third area DA3 while maintaining a constantinterval. The third area DA3 may be in contact with or adjacent to thesecond area DA2. The distance of the third area DA3 from the first sideS1 and/or the fourth side S4 may be greater than the distance of thesecond area DA2 from the first side S1 and/or the fourth side S4. Thesecond area DA2 may be positioned between the third area DA3 and thefirst area DA1.

The fourth area DA4 may be formed to be elongated along the first sideS1. A fourth plurality of holes h may be sequentially formed in thefourth area DA4 while maintaining a constant interval. The fourth areaDA4 may be in contact with or adjacent to the third area DA3. Thedistance of the fourth area DA4 from the first side S1 and/or the fourthside S4 may be greater than the distance of the third area DA3 from thefirst side S1 and/or the fourth side S4. The third area DA3 may bepositioned between the fourth area DA4 and the second area DA2.

The light pattern DLP, CLP may include a phosphor. The light patternDLP, CLP may include a red-based phosphor and a green-based phosphor.The light pattern DLP, CLP may include a yellow-based phosphor.

For example, the light pattern DLP, CLP may have a yellow-based color,with the naked eye. The light pattern DLP, CLP may convert blue-basedlight provided by the light source 224 (refer to FIG. 5 ) or the opticalassembly 224 into white light.

As another example, the light pattern DLP, CLP may have black orgray-based color, with the naked eye. The light pattern DLP, CLP mayabsorb light provided by the light source 224 (refer to FIG. 5 ) or theoptical assembly 224.

The light pattern DLP may include dots DLP. The dots DLP may be disposedaround the hole h. The dots DLP may be disposed to surround the hole h.

The curved line CLP may be disposed around at least one hole h among thefirst plurality of holes h. The curved line CLP may have a ring shape, asemicircle shape, or a fan shape as a whole. The curved line CLP may beelongated in an arc along the external circumference of the hole h. Aportion of the curved line CLP may be opened. The open portion of thecurved line CLP may face the fourth side S4. The curved line CLP may beformed adjacent to the first side S1.

In the hole h adjacent to the first side S1, the curved line CLP1 may bepositioned between the hole h and the first side S1. The dots DLP1 maybe positioned opposite to the curved line CLP1 with respect to the holeh. For example, the arc formed by the dots DLP1 may be larger than thearc formed by the curved line CLP1. As another example, five dots DLP1may be disposed around the hole h, and the curved line CLP1 may bedisposed in the remaining area. The curvature of the arc formed by thefive dots DLP1 may be the same as the curvature of the arc formed by thecurved line CLP1. In the hole h adjacent to the fourth side S4, thecurved line CLP2 may be disposed around the hole h, and the open portionof the curved line CLP2 may face the fourth side S4. The width of thecurved line CLP2 adjacent to the fourth side S4 may be substantially thesame as the width of the curved line CLP1 adjacent to the first side S1.

Second dots DLP2 may be disposed around at least one of the secondplurality of holes h. For example, the number of second dots DLP2 may beeight, or any other variation of numbers, and the eight second dots DLP2may be sequentially positioned around the hole h while maintaining aconstant interval. The number of dots DLP2 around the hole h adjacent tothe cut line CL2 may be six. A dot DLP2 may be excluded from an areaadjacent to the cut line CL2 around the hole h.

Third dots DLP3 may be disposed around at least one of the plurality ofthird holes h. For example, the number of third dots DLP3 may be eight,or any other variation of numbers, and the eight third dots DLP3 may besequentially positioned around the hole h while maintaining a constantinterval.

Fourth dots DLP4 may be disposed around at least one of the plurality offourth holes h. For example, the number of fourth dots DLP4 may be threeor four, or any other variation of numbers, and four fourth dots DLP4may be sequentially positioned around the hole h while maintaining aconstant interval. The number of dots DLP4 around the hole h adjacent tothe cut line CL4 may be three. The dot DLP4 may be excluded from an areaadjacent to the cut line CL4 around the hole h.

For example, the size of the second dot DLP2 may be greater than thesize of the third dot DLP3. The size of the third dot DLP3 may begreater than the size of the fourth dot DLP4. As another example, thesizes of the second dot DLP2, the third dot DLP3, and the fourth dotDLP4 may have the same size. When the sizes of the dots DLP are thesame, the number of dots DLP may increase.

The description of the second corner C2 may be applied to other cornersC1, C3, and C4.

Referring to FIG. 15 , the reflective sheet 226 may include a first areaDA1, a second area DA2, a third area DA3, a fourth area DA4, a centralarea CDA, an intermediate area MDA1, MDA2, and a triangular area TDA.The area DA may be referred to as a dot area DA or a pattern area DA.

The first area DA1 may be formed to be elongated along the first side S1and/or the fourth side S4. The first plurality of holes h may besequentially formed in the first area DA1 while maintaining a constantinterval. The first area DA1 may be in contact with the first side S1and/or the fourth side S4. The description of the first side S1 and/orthe fourth side S4 may be applied to other sides S2 and S3 (refer toFIG. 7 ).

The second area DA2 may be formed to be elongated along the first sideS1 and/or the fourth side S4. The second plurality of holes h may besequentially formed in the second area DA2 while maintaining a constantinterval. The second area DA2 may be in contact with or adjacent to thefirst area DA1. The distance of the second area DA2 from the first sideS1 and/or the fourth side S4 may be greater than the distance of thefirst area DA1 from the first side S1 and/or the fourth side S4. Thefirst area DA1 may be positioned between the second area DA2 and thefirst side S1 and/or the fourth side S4.

The third area DA3 may be formed to be elongated along the first side S1and/or the fourth side S4. A third plurality of holes h may besequentially formed in the third area DA3 while maintaining a constantinterval. The third area DA3 may be in contact with or adjacent to thesecond area DA2. The distance of the third area DA3 from the first sideS1 and/or the fourth side S4 may be greater than the distance of thesecond area DA2 from the first side S1 and/or the fourth side S4. Thesecond area DA2 may be positioned between the third area DA3 and thefirst area DA1.

The fourth area DA4 may be formed to be elongated along the first sideS1 and/or the fourth side S4. A fourth plurality of holes h may besequentially formed in the fourth area DA4 while maintaining a constantinterval. The fourth area DA4 may be in contact with or adjacent to thethird area DA3. The distance of the fourth area DA4 from the first sideS1 and/or the fourth side S4 may be greater than the distance of thethird area DA3 from the first side S1 and/or the fourth side S4. Thethird area DA3 may be positioned between the fourth area DA4 and thesecond area DA2.

The central area CDA may be an area of the reflective sheet 226excluding the first area DA1, the second area DA2, the third area DA3,and the fourth area DA4.

The light pattern DLP may include a phosphor. The light pattern DLP mayinclude a red-based phosphor and a green-based phosphor. The lightpattern DLP may include a yellow-based phosphor.

For example, the light pattern DLP may have a yellow-based color, withthe naked eye. The light pattern DLP may convert blue-based lightprovided by the light source 224 (refer to FIG. 5 ) or the opticalassembly 224 into white light.

As another example, the light pattern DLP may have black or gray-basedcolor, with the naked eye. The light pattern DLP may absorb lightprovided by the light source 224 (refer to FIG. 5 ) or the opticalassembly 224.

The light pattern DLP may include dots DLP. The dots DLP may be disposedaround the hole h. The dots DLP may be disposed to surround the hole h.

First dots DLP1 may be disposed around at least one of the firstplurality of holes h. For example, the number of first dots DLP1 may beeight, or any other variation of numbers, and the eight first dots DLP1may be sequentially positioned around the hole h while maintaining aconstant interval.

Second dots DLP2 may be disposed around at least one of the secondplurality of holes h. For example, the number of second dots DLP2 may beeight, or any other variation of numbers, and the eight second dots DLP2may be sequentially positioned around the hole h while maintaining aconstant interval.

Third dots DLP3 may be disposed around at least one of the plurality ofthird holes h. For example, the number of third dots DLP3 may be eight,or any other variation of numbers, and the eight third dots DLP3 may besequentially positioned around the hole h while maintaining a constantinterval.

Fourth dots DLP4 may be disposed around at least one of the plurality offourth holes h. For example, the number of fourth dots DLP4 may be threeor four, or any other variation of numbers, and four fourth dots DLP4may be sequentially positioned around the hole h while maintaining aconstant interval. The number of dots DLP4 around the hole h adjacent tothe cut line CL1 may be three, or any other variation of numbers. Thedot DLP4 may be excluded from an area adjacent to the cut line CL1around the hole h.

For example, the size of the first dot DLP1 may be greater than the sizeof the second dot DLP2. The size of the second dot DLP2 may be greaterthan the size of the third dot DLP3. The size of the third dot DLP3 maybe greater than the size of the fourth dot DLP4.

As another example, the sizes of the first dot DLP1, the second dotDLP2, the third dot DLP3, and the fourth dot DLP4 may have the samesize. When the sizes of the dots DLP are the same, the number of dotsDLP may increase.

The intermediate area MDA1 may be positioned between the first pluralityof holes h. The intermediate area MDA1 may be formed between the firstplurality of holes h adjacent to the first side S1. The intermediatearea MDA1 may be formed to extend longitudinally in a direction ofintersecting with or being perpendicular to the length direction of thefirst side S1. The dots DLP1 may be disposed in the intermediate areaMDA1. For example, a plurality of dots DLP1 may be disposed in thelength direction of the intermediate area MDA1. For example, the numberof dots DLP1 may be two, or any other variation of numbers.

The intermediate area MDA2 may be positioned between the first pluralityof holes h. The intermediate area MDA2 may be formed between the firstplurality of holes h adjacent to the fourth side S4. A plurality ofintermediate areas MDA2 may be formed between the first plurality ofholes h adjacent to the fourth side S4. The region having theintermediate area MDA2 may form a triangle. The dots DLP1 may bedisposed in the intermediate area MDA2. For example, a plurality of dotsDLP1 may be disposed in the intermediate area MDA2. For example, thenumber of dots DLP1 may be three, or any other variation of numbers.

The intermediate area MDA2 may be positioned between the secondplurality of holes h. The intermediate area MDA2 may be formed betweenthe second plurality of holes h adjacent to the fourth side S4. Aplurality of intermediate areas MDA2 may be formed between the secondplurality of holes h adjacent to the fourth side S4. The intermediatearea MDA2 may form a triangle. The dots DLP2 may be disposed in theintermediate area MDA2. For example, a plurality of dots DLP2 may bedisposed in the intermediate area MDA2. For example, the number of dotsDLP2 may be three, or any other variation of numbers.

The intermediate area MDA2 may be formed between the first area DA1 andthe second area DA2. The intermediate area MDA2 may be formed betweenthe second area DA2 and the third area DA3. The intermediate area MDA2may form a triangular area TDA as a whole throughout the second area DA2and the third area DA3.

The description of the second corner C2 may be applied to other cornersC1, C3, and C4.

Referring to FIG. 16 , the reflective sheet 226 may include a first areaDA1, a second area DA2, a third area DA3, a fourth area DA4, a centralarea CDA, and an intermediate area MDA1, MDA2. The area DA may bereferred to as a dot area DA or a pattern area DA.

The first area DA1 may be formed to be elongated along the first side S1and/or the fourth side S4. The first plurality of holes h may besequentially formed in the first area DA1 while maintaining a constantinterval. The first area DA1 may be in contact with the first side S1and/or the fourth side S4. The description of the first side S1 and/orthe fourth side S4 may be applied to other sides S2 and S3 (refer toFIG. 7 ).

The second area DA2 may be formed to be elongated along the first sideS1 and/or the fourth side S4. The second plurality of holes h may besequentially formed in the second area DA2 while maintaining a constantinterval. The second area DA2 may be in contact with or adjacent to thefirst area DA1. The distance of the second area DA2 from the first sideS1 and/or the fourth side S4 may be greater than the distance of thefirst area DA1 from the first side S1 and/or the fourth side S4. Thefirst area DA1 may be positioned between the second area DA2 and thefirst side S1 and/or the fourth side S4.

The third area DA3 may be formed to be elongated along the first side S1and/or the fourth side S4. A third plurality of holes h may besequentially formed in the third area DA3 while maintaining a constantinterval. The third area DA3 may be in contact with or adjacent to thesecond area DA2. The distance of the third area DA3 from the first sideS1 and/or the fourth side S4 may be greater than the distance of thesecond area DA2 from the first side S1 and/or the fourth side S4. Thesecond area DA2 may be positioned between the third area DA3 and thefirst area DA1.

The fourth area DA4 may be formed to be elongated along the first sideS1 and/or the fourth side S4. A fourth plurality of holes h may besequentially formed in the fourth area DA4 while maintaining a constantinterval. The fourth area DA4 may be in contact with or adjacent to thethird area DA3. The distance of the fourth area DA4 from the first sideS1 and/or the fourth side S4 may be greater than the distance of thethird area DA3 from the first side S1 and/or the fourth side S4. Thethird area DA3 may be positioned between the fourth area DA4 and thesecond area DA2.

The central area CDA may be an area of the reflective sheet 226excluding the first area DA1, the second area DA2, the third area DA3,and the fourth area DA4.

The light pattern DLP may include a phosphor. The light pattern DLP mayinclude a red-based phosphor and a green-based phosphor. The lightpattern DLP may include a yellow-based phosphor.

For example, the light pattern DLP may have a yellow-based color, withthe naked eye. The light pattern DLP may convert blue-based lightprovided by the light source 224 (refer to FIG. 5 ) or the opticalassembly 224 into white light.

As another example, the light pattern DLP may have black or gray-basedcolor, with the naked eye. The light pattern DLP may absorb lightprovided by the light source 224 (refer to FIG. 5 ) or the opticalassembly 224.

The light pattern DLP may include dots DLP. The dots DLP may be disposedaround the hole h. The dots DLP may be disposed to surround the hole h.

First dots DLP1 may be disposed around at least one of the firstplurality of holes h. For example, the number of first dots DLP1 may beeight, or any other variation of numbers, and the eight first dots DLP1may be sequentially positioned around the hole h while maintaining aconstant interval.

Second dots DLP2 may be disposed around at least one of the secondplurality of holes h. For example, the number of second dots DLP2 may beeight, or any other variation of numbers, and the eight second dots DLP2may be sequentially positioned around the hole h while maintaining aconstant interval.

Third dots DLP3 may be disposed around at least one of the plurality ofthird holes h. For example, the number of third dots DLP3 may be eight,or any other variation of numbers, and the eight third dots DLP3 may besequentially positioned around the hole h while maintaining a constantinterval.

Fourth dots DLP4 may be disposed around at least one of the plurality offourth holes h. For example, the number of fourth dots DLP4 may be four,or any other variation of numbers, and four fourth dots DLP4 may besequentially positioned around the hole h while maintaining a constantinterval.

For example, the size of the first dot DLP1 may be greater than the sizeof the second dot DLP2. The size of the second dot DLP2 may be greaterthan the size of the third dot DLP3. The size of the third dot DLP3 maybe greater than the size of the fourth dot DLP4.

As another example, the sizes of the first dot DLP1, the second dotDLP2, the third dot DLP3, and the fourth dot DLP4 may have the samesize. When the sizes of the dots DLP are the same, the number of dotsDLP may increase.

The intermediate area MDA1 may be positioned between the first pluralityof holes h. The intermediate area MDA1 may be formed between the firstplurality of holes h adjacent to the fourth side S4. The intermediatearea MDA1 may be formed to extend long in a direction of intersectingwith or being perpendicular to the length direction of the fourth sideS4. The dots DLP1 may be disposed in the intermediate area MDA1. Forexample, a plurality of dots DLP1 may be disposed in the lengthdirection of the intermediate area MDA1. For example, the number of dotsDLP1 may be two.

The intermediate area MDA2 may be positioned between the first pluralityof holes h. The intermediate area MDA2 may be formed between the firstplurality of holes h adjacent to the first side S1. A plurality ofintermediate areas MDA2 may be formed between the first plurality ofholes h adjacent to the first side S1. The intermediate area MDA2 mayform a triangle. The dots DLP1 may be disposed in the intermediate areaMDA2. For example, a plurality of dots DLP1 may be disposed in theintermediate area MDA2. For example, the number of dots DLP1 may bethree.

The intermediate area MDA1 may be positioned between the secondplurality of holes h. The intermediate area MDA1 may be formed betweenthe second plurality of holes h adjacent to the fourth side S4. Theintermediate area MDA1 may be formed to extend longitudinally in adirection of intersecting with or being perpendicular to the lengthdirection of the fourth side S4. The dots DLP2 may be disposed in theintermediate area MDA1. For example, a plurality of dots DLP2 may bedisposed in the length direction of the intermediate area MDA1. Forexample, the number of dots DLP2 may be three, or any other variation ofnumbers.

The intermediate area MDA2 may be positioned between the secondplurality of holes h. The intermediate area MDA2 may be formed betweenthe plurality of second holes h adjacent to the first side S1. Aplurality of intermediate areas MDA2 may be formed between a secondplurality of holes h adjacent to the first side S1. The intermediatearea MDA2 may form a triangle. The dots DLP2 may be disposed in theintermediate area MDA2. For example, a plurality of dots DLP2 may bedisposed in the intermediate area MDA2. For example, the number of dotsDLP2 may be three, or any other variation of numbers.

The intermediate area MDA1 may be positioned between the third pluralityof holes h. The intermediate area MDA1 may be formed between the thirdplurality of holes h adjacent to the fourth side S4. The intermediatearea MDA1 may be formed to extend long in a direction of intersectingwith or being perpendicular to the length direction of the fourth sideS4. The dots DLP3 may be disposed in the intermediate area MDA1. Forexample, a plurality of dots DLP3 may be disposed in the lengthdirection of the intermediate area MDA1. For example, the number of dotsDLP3 may be two, or any other variation of numbers.

The intermediate area MDA2 may be positioned between the third pluralityof holes h. The intermediate area MDA2 may be formed between the thirdplurality of holes h adjacent to the first side S1. A plurality ofintermediate areas MDA2 may be formed between the third plurality ofholes h adjacent to the first side S1. The intermediate area MDA2 mayform a triangle. The dots DLP3 may be disposed in the intermediate areaMDA2. For example, a plurality of dots DLP3 may be disposed in theintermediate area MDA2. For example, the number of dots DLP3 may bethree, or any other variation of numbers.

The intermediate area MDA2 may be formed between the first area DA1 andthe second area DA2. The intermediate area MDA2 may be formed betweenthe second area DA2 and the third area DA3.

The description of the second corner C2 may be applied to other cornersC1, C3, and C4.

Referring to FIG. 17 , an inner frame 310, 330 may be coupled to sidesLS1, LS2, SS1, SS2 or edges LS1, LS2, SS1, SS2 of the rear frame 130.The inner frame 310, 330 may include a plurality of parts 310 and 330. Afirst part 310 may be coupled to the first long side LS1 of the rearframe 130. A second part 310 may be coupled to the second long side LS2of the rear frame 130. A third part 330 may be coupled to the firstshort side SS1 of the rear frame 130. A fourth part 330 may be coupledto the second short side SS2 of the rear frame 130. The first part 310may be coupled to the third part 330 and the fourth part 330, and thesecond part 310 may be coupled to the third part 330 and the fourth part330. The first part 310, the second part 310, the third part 330, or thefourth part 330 may be referred to as inner frame 310, 330.

Referring to FIGS. 18 and 19 , the inner frame 310 may be elongated, andmay have a curved bar shape at both ends. A center part 311 may beelongated, and may have a rectangular cross-section. A support surface311 a may form one surface of the center part 311. A frame wall 313 mayprotrude from the support surface 311 a, and may be elongated along thelength direction of the center part 311. A plurality of frame walls 313may be formed side by side. A first framewall 313 a may be spaced apartfrom a second framewall 313 b.

An accommodation portion 314 may be formed on a frame wall 313. Theaccommodation portion 314 may provide a flat surface to the upper end ofthe frame wall 313. The length of the accommodation portion 314 may besmaller than the length of the frame wall 313. A recessed portion 316may be formed on the support surface 311 a. The recessed portion 316 maybe formed while forming a step that is lowered from the support surface311 a. A cover wall 315 may be positioned at one side of the recessedportion 316. The cover wall 315 may extend along an alignment line ofthe first frame wall 313 a. A pad AD or an adhesive pad AD may be fixedto the recessed portion 316, and the pad AD or the adhesive pad AD maysupport the optical layer 129 (refer to FIG. 3 ).

The side part 312 may extend while being bent or angled from one or bothends of the center part 311. The support surface 311 a may be formed atone surface of the side part 312. A coupling rib 319 may protrude fromone end of the side part 312. The recessed portion 318 may form a stepthat is lowered from the support surface 311 a of the side part 312. Thecover wall 317 may be positioned at one side of the recessed portion 318of the side part 312, and may be connected to the cover wall 315 of thecenter part 311.

Referring to FIGS. 19 and 20 , a coupling rib 321, 322 may protrude fromthe support surface 311 a of the center part 311, and there may be aplurality of coupling ribs 321 and 322. A first coupling rib 321 mayprotrude from the support surface 311 a of the center part 311, and maybe elongated in the length direction of the center part 311. A secondcoupling rib 322 may be positioned adjacent to the first coupling rib321, and may extend along an alignment line of the first coupling rib321.

A third framewall 313 c may extend from the first framewall 313 a and/orthe second framewall 313 b. The third frame wall 313 c may be positionedadjacent to the first coupling rib 321 and the second coupling rib 322,and may be in contact with one edge of the center part 311. The heightof the third framewall 313 c may be smaller than the height of the firstframewall 313 a and/or the second framewall 313 b.

Referring to FIG. 21 together with FIG. 19 , the inner frame 310 mayinclude a middle coupler 324, 325. The middle coupler 324, 325 may bepositioned at the outer surface of the center part 311. The middlecoupler 324, 325 may be one of a plurality of middle couplers. The firstmiddle coupler 324 may be defined by slots S or slits S formed bycutting-out an outer surface 323 of the center part 311.

A first middle coupler 324, 325 may include a locking protrusion 324protruding from the outer surface 323 of the center part 311. Thelocking protrusion 324 may be formed adjacent to a lower distal end ofthe first middle coupler 324, 325. A coupling hole 325 may pass throughthe first middle coupler 324, 325 and be formed between the supportsurface 311 a and the locking protrusion 324. A protrusion 132 of theframe 130 may be inserted and secured into the coupling hole 325 of thefirst middle coupler 324, 325.

A second middle coupler 324 may be positioned adjacent to the firstmiddle coupler 324, 325 along the length direction of the center part311. The second middle coupler 324 may include a locking protrusion 324protruding from the outer surface of the center part 311. The lockingprotrusion 324 may be formed adjacent to a lower distal end of thesecond middle coupler 324.

The pad AD or the adhesive pad AD may be positioned in or fixed to theaccommodation portion 314.

Referring to FIG. 22 together with FIG. 19 , the inner frame 310 mayinclude a side middle coupler 324, 325, 326. The side middle coupler324, 325, 326 may be positioned at the outer surface of the side part312. The side middle coupler 324, 325, 326 may be one of a plurality ofside middle couplers. The side middle coupler 324, 325 may be defined byslots S formed by cutting out the outer surface 323 of the side part312.

A third middle coupler 324, 325 may include a locking protrusion 324protruding from the outer surface 323 of the side part 312. The lockingprotrusion 324 may be formed adjacent to a lower distal end of the thirdmiddle coupler 324, 325. The coupling hole 325 may pass through thethird middle coupler 324, 325 and be formed between the support surface311 a and the locking protrusion 324. The protrusion 132 of the frame130 may be inserted and secured into the coupling hole 325 of the thirdmiddle coupler 324, 325.

A fourth middle coupler 326 may be positioned adjacent to the thirdmiddle coupler 324, 325 along the length direction of the side part 312.The fourth middle coupler 326 may include a locking protrusion 326protruding from the outer surface 323 of the side part 312. The lockingprotrusion 326 may be formed adjacent to a lower distal end of thefourth middle coupler 326. One slot S may be formed between the thirdmiddle coupler 324, 325 and the fourth middle coupler 326.

Referring to FIG. 23 , the inner frame 330, 331 may include a supportsurface 331 a and a sidewall 332. The support surface 331 a may form onesurface of the third part 331 and/or the fourth part 331 of the innerframe 330, 331. A coupling groove 334 may be formed in the supportsurface 331 a of the inner frame 330, 331. The rear frame 130 and theinner frame 330 may be coupled by a screw SC inserted into the couplinggroove 334. An accommodation portion 333 may be formed by recessing orcutting out the upper surface of the sidewall 332. The pad AD or theadhesive pad AD may be positioned on or fixed to the accommodationportion 333.

Referring to FIGS. 24 to 26 , the optical layer 123 may be placed on theinner frame 310, 330. An outer frame 400 may be coupled to the innerframe 310, 330 while covering the periphery of the optical layer 123.The outer frame 400 may be referred to as a guide panel 400. The outerframe 410, 420, 430 may be coupled to the first short side SS1, thefirst long side LS1, and/or the second short side SS2 while theelongated frame 400 is bent. A separate outer frame 440 may be coupledto the second long side LS2.

A first part 410 of the outer frame 400 may include a horizontal portion411 and a vertical portion 412. The description of the first part 410may be applied to the second part 420 and/or the third part 430. Thehorizontal portion 411 may have an elongated plate or planar shape. Thevertical portion 412 may have a plate or planar shape that is elongatedand bent or angled from the horizontal portion 411. A rib hole 415 maybe formed in the horizontal portion 411. There may be a plurality of ribholes 415. A first rib hole 415 a may be an elongated long hole. Asecond rib hole 415 b may be an elongated hole, and may be disposedalong the length direction of the first rib hole 415 a. The rib holes415 may be formed to penetrate the horizontal portion 411.

A guide rib 414 may protrude from the horizontal portion 411 and may beelongated. The guide rib 414 may be parallel to the vertical portion412. The rib holes 415 may be positioned between the guide ribs 414. Thehook line 413 may be formed at the vertical portion 412. The hook line413 may be adjacent to the guide rib 414 or facing the guide rib 414.

Referring to FIG. 27 , the first part 410 may include a horizontalportion 411 and a vertical wall 412W. The vertical wall 412W may beformed at a constant height from the horizontal portion 411. The thirdpart 430 may include a horizontal portion 431 and a vertical wall 432W.The vertical wall 432W may be formed at a constant height from thehorizontal portion 431.

The vertical wall 412W of the first part 411 may be connected to thevertical wall 432W of the third part 430. A corner formed by thevertical wall 412W of the first part 411 and the vertical wall 432W ofthe third part 430 may be rounded. The vertical wall 412W of the firstpart 410 may form a gap with the vertical wall 432W of the third part430.

Referring to FIGS. 28 and 29 , the outer frame 400 may be coupled to therear frame 130 and/or the inner frame 310, 330 (refer to FIG. 17 ) whilecovering the optical sheet 125. The horizontal portion 411 of the outerframe 400 may be placed on the optical sheet 125, and the coupling ribs321 and 322 to which the optical sheet 125 is coupled may be insertedinto the rib hole 415.

The pad AD or the adhesive member AD may be positioned in or fixed tothe horizontal portion 411 of the outer frame 400. For example, the padAD may be a double-sided tape having a constant thickness. The displaypanel 110 (refer to FIG. 30 ) may be placed on the outer frame 400 andfixed to the horizontal portion 411 by the pad AD.

Referring to FIGS. 29 and 30 , the center frame 311 of the inner frame310 may be coupled to one side of the rear frame 130. A distal end ofthe bent rear frame 130 may be inserted into the center frame 311 of theinner frame 310. The protrusion 132 protruding to the outside of therear frame 130 may be inserted into the coupling hole 325 of the innerframe 310.

The outer frame 410 may include a line groove 419. The line groove 419may be formed at the vertical portion 412 of the outer frame 410. Thelocking protrusion 324 of the inner frame 310 may be inserted into theline groove 419 of the outer frame 410. The locking protrusion 324 ofthe inner frame 310 may be engaged with a hook line 413 of the outerframe 410.

The guide rib 414 of the outer frame 410 may be inserted into the innerframe 310. The guide rib 414 may be inserted into and fixed to the innerframe 310 while the outer frame 410 is placed on the inner frame 310.

The optical layer 123 and the optical sheet 125 may be placed on thesupport surface 311 a of the inner frame 310, and may be positionedbetween the support surface 311 a of the inner frame 310 and thehorizontal portion 411 of the outer frame 410. The display panel 110 maybe placed on the horizontal portion 411 of the outer frame 410, and thevertical wall 412W may cover the side surface of the display panel 110.

Referring to FIGS. 1 to 30 , a display device according to an aspect ofthe present disclosure includes: a display panel 110; a rear frame 130which is positioned in a rearward direction of the display panel 110; aninner frame 310 which is positioned between the display panel 110 andthe rear frame 130, and coupled to the rear frame 130; and an outerframe 400 which is coupled to the inner frame 310, and supports a rearsurface of the display panel 110.

According to another aspect of the present disclosure, the rear frame130 includes: a flat plate portion 131 facing the display panel 110; avertical portion 133 which is bent and extended from the flat plateportion 131, and inserted into the inner frame 310; and a frameprotrusion 132 protruding from the vertical portion 133, wherein theinner frame 310 includes a coupling hole 325 which faces the verticalportion 133 of the rear frame 130, and into which the frame protrusion132 is inserted.

According to another aspect of the present disclosure, the inner frame310 includes a locking protrusion 324 which is positioned adjacent tothe coupling hole 325, and protrudes and extends from an outer surface323 of the inner frame 310; wherein the outer frame 400 includes: ahorizontal portion 411 which supports a rear surface of the displaypanel 110; a vertical portion 412 which extends in a directionintersecting with the horizontal portion 411, and faces the verticalportion 133 of the rear frame 130; and a line groove 419 which isrecessed to be formed in the vertical portion 412, and into which thelocking protrusion 324 of the inner frame 310 is inserted.

According to another aspect of the present disclosure, the outer frame400 further includes a hook line 413 which is positioned adjacent to theline groove 419 and engaged with the locking protrusion 324 of the innerframe 310.

According to another aspect of the present disclosure, the inner frame310 includes at least a pair of slits S which are formed by cutting outan outer surface of the inner frame 310, and face the coupling hole 325.

According to another aspect of the present disclosure, the inner frame310 further includes: a support surface 311 a facing the horizontalportion 411 of the outer frame 400; a frame wall 313 which is positionedbetween the support surface 311 a and the display panel 110, andprotrudes to be elongated from the support surface 311 a; and anaccommodation portion 316 formed in the frame wall 313.

According to another aspect of the present disclosure, the inner frame310 further includes a pad AD which is fixed to the accommodationportion 316 and in contact with the horizontal portion 411 of the outerframe 400.

According to another aspect of the present disclosure, the inner frame310 further includes a coupling rib 321 which protrudes from the supportsurface 311 a and is elongated in a length direction of the inner frame310, wherein the outer frame 400 further includes a rib hole 415 whichis formed in the horizontal portion 411, and into which the coupling rib321 is inserted.

According to another aspect of the present disclosure, the displaydevice further includes an optical sheet which 125 is positioned betweenthe inner frame 310 and the outer frame 400, and caught by the couplingrib 321.

According to another aspect of the present disclosure, the inner frame310 further includes: a recessed portion 316 which is formed byrecessing the support surface 311 a of the inner frame 310; and a pad ADfixed to the recessed portion 316, and further includes an optical layer123 which is positioned between the rear frame 130 and the display panel110, and placed on the pad AD.

According to another aspect of the present disclosure, the outer frame400 further includes a guide rib which protrudes from the horizontalportion of the outer frame 400 and is elongated in a length direction ofthe outer frame 400, wherein the guide rib of the outer frame 400 isinserted into the inner frame 310.

According to another aspect of the present disclosure, the guide rib 414of the outer frame 400 is extended in parallel with a vertical portion412 of the outer frame 400.

The effect of the display device according to the present disclosure isas follows.

According to at least one of the embodiments of the present disclosure,image quality of a display device can be improved.

According to at least one of the embodiments of the present disclosure,it is possible to provide a display device capable of improvingluminance and light uniformity of the backlight unit.

According to at least one of the embodiments of the present disclosure,it is possible to provide a display device capable of effectivelycontrolling light provided from the backlight unit.

According to at least one of the embodiments of the present disclosure,the purity of white light can be improved by improving the bluishphenomenon of light provided from the backlight unit.

According to at least one of the embodiments of the present disclosure,it is possible to provide a coupling structure of a display devicecapable of improving luminance and light uniformity.

According to at least one of the embodiments of the present disclosure,it is possible to provide a display device having a sturdy couplingstructure while reducing an optical depth.

Certain embodiments or other embodiments of the disclosure describedabove are not mutually exclusive or distinct from each other. Any or allelements of the embodiments of the disclosure described above may becombined or combined with each other in configuration or function.

For example, a configuration “A” described in one embodiment of thedisclosure and the drawings and a configuration “B” described in anotherembodiment of the disclosure and the drawings may be combined with eachother. Namely, although the combination between the configurations isnot directly described, the combination is possible except in the casewhere it is described that the combination is impossible.

Although embodiments have been described with reference to a number ofillustrative embodiments thereof, it should be understood that numerousother modifications and embodiments can be devised by those skilled inthe art that will fall within the scope of the principles of theinvention. More particularly, various variations and modifications arepossible in the component parts and/or arrangements of the subjectcombination arrangement within the scope of the invention, the drawingsand the appended claims. In addition to variations and modifications inthe component parts and/or arrangements, alternative uses will also beapparent to those skilled in the art.

What is claimed is:
 1. A display device comprising: a display panel; arear frame at a rear of the display panel; an inner frame between thedisplay panel and the rear frame, wherein the inner frame is coupled tothe rear frame; and an outer frame coupled to the inner frame, andconfigured to support a rear surface of the display panel.
 2. Thedisplay device of claim 1, wherein the rear frame comprises: a flatplate portion facing the display panel; a vertical portion extendingfrom the flat plate portion; and a frame protrusion protruding from thevertical portion, wherein the inner frame comprises a coupling holewhich faces the vertical portion of the rear frame and into which theframe protrusion is inserted.
 3. The display device of claim 2, whereinthe inner frame comprises a locking protrusion extending from an outersurface of the inner frame; wherein the outer frame comprises: ahorizontal portion supporting a rear surface of the display panel; avertical portion extending adjacent to the vertical portion of the rearframe; and a line groove formed to be recessed in the vertical portionand into which the locking protrusion of the inner frame is inserted. 4.The display device of claim 3, wherein the outer frame further comprisesa hook line positioned adjacent to the line groove and configured to beengaged with the locking protrusion of the inner frame.
 5. The displaydevice of claim 2, wherein the inner frame comprises at least a pair ofslits at an outer surface of the inner frame, wherein each slit ispositioned opposite each other with respect to the coupling hole.
 6. Thedisplay device of claim 3, wherein the inner frame further comprises: asupport surface facing the horizontal portion of the outer frame; aframe wall protruding from the support surface and positioned betweenthe support surface and the display panel; and an accommodation portionformed in the frame wall.
 7. The display device of claim 6, wherein theinner frame further comprises a first pad fixed to the accommodationportion to contact the horizontal portion of the outer frame.
 8. Thedisplay device of claim 6, wherein the inner frame further comprises acoupling rib protruding from the support surface and elongated in alength direction of the inner frame, wherein the outer frame furthercomprises a rib hole formed at the horizontal portion and into which thecoupling rib is inserted.
 9. The display device of claim 8, furthercomprising an optical sheet positioned between the inner frame and theouter frame, and secured by the coupling rib.
 10. The display device ofclaim 6, wherein the inner frame further comprises: a recessed portionat the support surface of the inner frame; and a second pad fixed to therecessed portion, wherein the display device further comprises anoptical layer positioned between the rear frame and the display panel,and disposed on the second pad.
 11. The display device of claim 1,wherein the outer frame further comprises a guide rib protruding fromthe horizontal portion of the outer frame and elongated in a lengthdirection of the outer frame, wherein the guide rib is inserted into theinner frame.
 12. The display device of claim 11, wherein the guide ribof the outer frame extends to be parallel with a vertical portion of theouter frame.